Cost guide
How Much Does Sash Window Restoration Cost in 2026?
In Cheltenham, a single sash repair starts around £70 for a cord and runs to £350 for a full sill splice. Draught proofing is £250–£450 per window, full restoration £700–£1,200+, and a complete timber replacement £1,200–£2,800+. Every job follows a free survey and a written, fixed-price quote.
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Cheltenham price guide 2026
Prices are guide ranges and subject to change depending on the job. For an exact figure, book a free survey.
| Job type | Cheltenham price range | What's included |
|---|---|---|
| Cord replacement | £70–£150 | Single cord ~£70–£80; full set of 4 ~£150. Bead removal, weight rebalancing, refitting. |
| Draught proofing | £250–£450 | Brush-pile routing £250–£350; £400+ for bay/triple-sash units or with staff/parting bead replacement. |
| Sill splice repair | £120–£350 | Minor splice/patch £120–£180; full sill replacement £240–£350+ with premium timbers like Accoya. |
| Basic overhaul | £400–£650 | Cords, easing, draught proofing, minor resin repairs. |
| Full restoration | £700–£1,200+ | Extensive timber splices, rot repair, hardware replacement, priming. |
| Slimline double glazing retrofit | £350–£650 per sash | £700–£1,300 for a full top-and-bottom sash box. Rebate re-routing, vacuum/argon slimline units, upgraded counterweights. |
| Full timber replacement | £1,200–£2,800+ | Standard softwood £1,200–£1,600; bespoke hardwood/Accoya £1,800–£2,800+ installed. |
All prices are guide ranges only. A written quote after a free survey is the only way to fix a price for your exact windows.
What moves your quote up or down
- Conservation areas (Pittville, Lansdown, Montpellier) often require exact profile matching, pushing jobs toward the upper end
- Accoya (50-year rot-free guarantee) and Sapele command a premium over standard softwood/hardwood
- Multi-window jobs are usually discounted — draught proofing drops from ~£350 for a single window to £280–£300/window when doing a whole house of 8+ sashes
- Access — upper floors or tight rear elevations may need scaffolding or towers
- Paint condition — heavy build-up takes longer to ease and prepare
- Glass type — retaining crown or cylinder glass is labour-intensive but preserves value
Where to go from here
The best next step is a free survey. We'll inspect every sash, tell you what can be repaired, what it will cost, and whether any work needs conservation or listed building consent. In the meantime you can read more about each service:
How Much Does Sash Window Restoration Cost in 2026? FAQs
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